drivers/gpu/drm/qxl/qxl_prime.c

   1 /*
   2  * Copyright 2014 Canonical
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Andreas Pokorny
  23  */
  24
  25 #include "qxl_drv.h"
  26 #include "qxl_object.h"
  27
  28 /* Empty Implementations as there should not be any other driver for a virtual
  29  * device that might share buffers with qxl */
  30
  31 int qxl_gem_prime_pin(struct drm_gem_object *obj)
  32 {
  33         struct qxl_bo *bo = gem_to_qxl_bo(obj);
  34
  35         return qxl_bo_pin(bo);
  36 }
  37
  38 void qxl_gem_prime_unpin(struct drm_gem_object *obj)
  39 {
  40         struct qxl_bo *bo = gem_to_qxl_bo(obj);
  41
  42         qxl_bo_unpin(bo);
  43 }
  44
  45 void *qxl_gem_prime_vmap(struct drm_gem_object *obj)
  46 {
  47         struct qxl_bo *bo = gem_to_qxl_bo(obj);
  48         void *ptr;
  49         int ret;
  50
  51         ret = qxl_bo_kmap(bo, &ptr);
  52         if (ret < 0)
  53                 return ERR_PTR(ret);
  54
  55         return ptr;
  56 }
  57
  58 void qxl_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
  59 {
  60         struct qxl_bo *bo = gem_to_qxl_bo(obj);
  61
  62         qxl_bo_kunmap(bo);
  63 }
  64
  65 int qxl_gem_prime_mmap(struct drm_gem_object *obj,
  66                        struct vm_area_struct *area)
  67 {
  68         WARN_ONCE(1, "not implemented");
  69         return -ENOSYS;
  70 }